define
(    
    function()
    {        
        var UserStatusChangedNotification = function(documentId, user, status)
        {
            this.toJSON = function()
            {
                return {documentId: documentId, user: user, status: status};
            };
        };

        UserStatusChangedNotification.prototype.id = UserStatusChangedNotification.id = "UserStatusChangedNotification";
        return UserStatusChangedNotification;
    }
);